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Day 350: JEE Mains Physics

5 questions. Try each one first, then open its answer.

  1. Question 1

    Alternating Current. Asked once: 2021 Paper 26 (same type asked 5 times) See all 5 of this type

    4
    Find the peak current and resonant frequency of the following circuit (as shown in figure; the source voltage is V=30sin⁡(100t) VV = 30\sin(100t)\ V)

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  2. Question 2

    Electrostatics. Asked once: 30 Jan 2023 (same type asked 5 times) See all 5 of this type

    118
    As shown in figure, a cuboid lies in a region with electric field E→=2x2ı^−4yȷ^+6k^ N/C\overrightarrow{E} = 2x^{2}\widehat{\imath}- 4y\widehat{\jmath}+ 6\widehat{k}\text{ }N/C. The magnitude of charge within the cuboid is n∈0Cn\in_{0}C. The value of n_____n\_\_\_\_\_ is (if dimension of cuboid is 1×2×3 m31 \times 2 \times 3{\text{ }m}^{3} ).

  3. Question 3

    Motion in a Plane. Asked once: 25 Jun 2022 (same type asked 5 times) See all 5 of this type

    3
    Which of the following relations is true for two- unit vectors A^\widehat{A} and B^\widehat{B} making an angle θ\theta to each other?

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  4. Question 4

    Semiconductor Electronics. Asked once: 25 Jul 2022 (same type asked 5 times) See all 5 of this type

    29
    The energy band gap of semiconducting material to produce violet (wavelength =4000Å= 4000\text{Å} ) LED is ____\_\_\_\_ eVeV. (Round off to the nearest integer).

  5. Question 5

    Work, Energy and Power. Asked once: 13 Apr 2023 (same type asked 5 times) See all 5 of this type

    15
    Two bodies are having kinetic energies in the ratio 16:916:9. If they have same linear momentum, the ratio of their masses respectively is:

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